at my last job, I tried to improve myself and meanwhile looked for another job. I am very happy at my current job now. Life is so much better if you are not depressed at work.
If you are harding working, (I believe you are) you deserve to find a job that fits you and makes you proud of yourself. Just try your best at your current work, be prepared to leave after 90 days. Try to get some good references during this period. Remember the only thing you have control is trying your best. Try your best to follow US LaoTu's suggestions at work. and try ever harder to find a new job.
Do not quit and never quit on anything. It sounds that your hu*****and does not like "quitter". Show your hu*****and you are trying very hard at work. Do not worry about what your chinese co-worker think, actually it is a good opportunity to show them you are a strong and brave woman. Any good person will respect that, if they are not good persons, why do you care what they think?
Family support is very important. But if you can not get it now, try to overcome this difficulty without it this time. Tell your hu*****and your plan (US LaoTu's suggestion) so he can not blame you not trying anything.
This is only a bump in your life when you look back after few years. This bump will make you and your family strong. Best wishes